Loom for weaving pile fabrics.



No. 709,447. Patented Sept. l6, I902.

. A. F. MGCOLLUM.

LOOM FUR WEAVING PILE FABRICS.

(Application filed July 8, 1901.]

(No Model.)

5 Sheets$heet l.

qzrwd THE uanms PETERS 00.. PHo-ro-uTl-m. wAsulNaToN. n. c.

No. 709,447. Patented Sept. 1902.

A. F. MGCOLLUM.

LOOM FOR WEAVING PILE FABRIC-S.

j (Application filed July 5, 1901.

(No Model.) 5 SheptsSheet 2'.

THE NORRIS Pz' sas co. PHOTCLLITHDH \HASVIM'HDN. a. c.

No. 709,447. 7 Patented Sept. 16, I902.

A. F. McCULLUM.

LUUM FOB WEAVING FILE FABRICS. (Ap plica tion filed July 8, 1901.)

mammal.) 5 sheets-sheet 3.

Nov 709,447.- Patented Sept. 16, 1902.,

. A. F McCOLLUM.

Loom FOR WEAV'ING PILE FABRICS.

(Application filed July 8, 1901.)

5 Shaets-Sheet 4.

(No Model.)

(II I I ll l lll Tn: NORRIS PETERS 0a.. FHOTDLWHO wnsnmawu. a. c.

No. 709,447. I Patented Sept. "5,1902.

A. F. mc'oLLum. I I

LDUM FOB WEAVING .PILE FABRICS.

I (Application filed July 8, 1901.) (No Model.) l

5 sheets sheet 5.

T542 uonms Firms c0 more-inns" WA U ITED STATES PATENT OFFICE.

ALFRED F. MOGOLLUM, or ESPY, PENNSYLVANIA, ASSIGNOR OF THREE- FIFTI-ISTO JAMES MAGEE, 21 ,0F BLOOMSBURG, PENNSYLVANIA.

LOOM FOR'WEAVING PILE FABRICS.

SPECIFICATION forming part of Letters Patent No. 709,447, datedSeptember 16, 1902.

Application filed July 8,1901.

To all whom it may concern:

Be it known that I, ALFRED F. MoCoLLUM, a citizen-f the United States,and a resident of Espy, Columbia county, Pennsyl Vania, have inventedcertain Improvements in Looms for \Veaving Pile Fabrics, of which thefollowing is a specification.

The object of this invention is to provide a loom for Weaving pilefabrics with pile- IO loop-cutting devices of such character that thepile-loops when out will present a pile of substantially uniform height.Hence there is not that loss of material which is experienced inshearing an unevenlyrcut pile down to a level,the cutting devicesfurthermore being such that certain loops of, a transverse row of loopsformed over a pile-wire may be cut and the remaining loops of the rowmay be permitted to remain uncut, whereby the fabric produced may havecut-pile figures upon an uncut-pile ground, or vice versa. By the use ofcertain patterning devices in connection with the cutting mechanism theconfiguration of the cut portions of the pile 2 5 may be varied asdesired.

In the accompanying drawings, Figures 1 and 1 represent in top or planview sufficient ot' the mechanism of a pile-loom to illustrate thepresent invention. Figs. 2 and 2.represent a front elevation of thesame, partly broken away. Fig. 3 is a section on the line a (t, Figs. 1and 2. Fig. at is a section on the line b b, Fig. 1. Fig. 5 is a sectionon the line 0 c, Fig. l; and Figs. 6 to 1; are views, mostly on a largerscale, of parts of the mech- ,anism.

Part of the frame of the loom is illustrated at 1 andpart of thebreastbeam at 2, said beamhaving bearings for the shaft of the 4obreast-roller 3, around which the Woven fabric passes, and the beam alsoserving as a guide for the slide 4:, whereby the pile-wires arewithdrawn from the fabric and reintroduced into the open shed ofWarp-threads,

said slide being reciprocated bya lever 5,

I which is connected by a two part link 6 to an arm 7 on the rock-shaft9. These parts are similar to those of an ordinary pile-loom, and

no further description of the piIe-wire-oper- 5o ating mechanism will benecessary, as my invention has no special reference thereto,

Serial No. 67,525. (No model.)

butconsists in certain devices supplementary to thepile-wire-controlling mechanism and intended to effect the cuttingof thepile-loops formed over the pile-wires.

The pile-wires 10 are U-shaped in crosssection, as shown in Fig. 7, andthe pile-loops cross the open tops of the pile-Wires, so that they canbe readily cutby means of a knife, having a portion projected down intothe hollow wire. If desired, however, the pile-wires may be filled withwood or composition, against which the sharp edge of a knife can bepressed Without being dulled. Such a pile-Wire is illustrated in Fig.14.

A number of cutting-knives11 are employed, ten of these knives beingshown in the presentinstance,said knives being mounted upon studs 12,having stems adapted toa longitudinal slot in a bar 13, mounted so as tobe free to slide longitudinally to a limited extent in bearings 14,suitably secured to the breast-beam 2 of the loom. By thus mounting theknives they can be adjusted toward or from each other upon the bar 13 inaccordance with the requirements of the pattern of cut pile which is tobe produced. In the present instance the mechanism is designedforproducing a checker-board pattern having alternate squares of cut anduncut loops, and the knives are therefore adjusted equidistantl y uponthe bar. The upper portion of each knife-blade is slotted for thereception of a stud 15, projecting from a 'bar 16, located above the bar13 and, like it, guided in the bearings 14,the bar 16 being slottedlongitudinally and the studs 15 having stems passing through said slotand secured to the bar in the same manner as the stems of the studs 12are secured to the bar 13, whereby the studs 15 can be adjusted on theirbar 10 to accord with the position of the knives upon the bar 13. Aspring 17, interposed between each knife and a Washer at the outer endof the stud 12, serves to keep said knife pressed snugly against aflange or collar at the inner end of said stud l2, and yet permits thelower or cutting edge of the knife to follow any departure from a truealinement of the grooved pile-wire, so as to insure the proper cuttingof the pile-loops stretched across the top of said wire, and alsopermits lateral deflection of a knife if it chances to strike a knot orother obstruction in the yarn, such as would cause lateral deflection.The bar 16 is acted upon by a coiled spring 19, which tends to move itin the direction of the arrow 00, Fig. 2, thereby swinging upward thelower or cutting ends of the knives 11, so that they will be withdrawnfrom the grooved pile-wires and carried above the tops of the pile-loopsformed thereon. When, however, the bar 16 is moved in the direction ofthe arrow w, Fig. 2, the cutting ends of the knives will be depressedand caused to enter the hollow pilewires, as shown by dotted lines inFig. 6, so that when the bar 13 is moved forward or in the direction ofthe arrow w, Fig. 6, the loops formed over the hollow pile-wire will becut by the knives as long as said forward movementof the bar 13continues. Forward movement of the bars 13 and 16 is effected by patternmechanism (shown in Figs. 1, 2, and 3) and which is as follows: On thepile-wire-controlling slide 4 is a vertical stud 20, in the upperportion of which is longitudinally guided a bolt 21, hollow throughoutthe greater portion of its length for the reception of a coiled spring22 and slotted for the passage of a screw or pin 23 at the top of thestud 20, the spring 22 hearing at one end against the shoulder in thebolt 21 and at the opposite end against said pin 23, so that it tendstoproject the bolt in the direction of the arrow 3 Fig. 2*, but permits itto be moved in the opposite direction when sufficient pressure isexerted thereon. Avertically-projecting bracket 24 on the slide 4carries a stud, pin, or bolt, upon which is mounted so as to be free toturn a ratchet-Wheel 25, and to the face of the latter is secured apattern-cam 26, and as the slide 4 is recipro- 32, which is mounted uponthe lever 5, so as i to be adjustable from and toward the'fulcrum of thesame, a set-screw 33 securing it in position upon the lever afteradjustment. The pawl 27 is acted upon by aspring 36, (shown by dottedlines in Fig. 2 which tends to force the upper end of the pawl intoengagement with recesses 35, formed in the back of the ratchet-wheel 25,there being one of these recesses for each tooth of the wheel. As thelever 5 swings the shaft 29 will be caused to rock in its bearings andthe pawl27 will act upon the ratchet-wheel 25, so as to move the same tothe extent of one tooth for each movement of the lever 5, overrunning ofthe wheel being prevented by the engagement of a detent-lever 34 withthe teeth of the wheel. The detent-lever is also carried by therockshaft 29, but can have a slight movement independently thereof,being retained in its bars 13 and 16 have vertically-offset portions, asshown in Fig. 2, forming engaging shoulders, and when these shouldersare in engagement, as shown in Fig. 2, the end of the upper bar 16projects slightly beyond the end of the bar 13, as shown in Fig. 2 Theupper bar 16 isin line with the bolt 21. Hence when the slide 4 is movedforwardly or in the direction of the arrow y, Fig. ,2, the first effectof this movement will be to bring the end of the bolt 21 into contactwith the end of the bar 16, and as the spring 19, which holds said bar16 in position, is stronger than the spring 22, which acts upon the bolt21, the latter will yield and be moved in a direction the reverse ofthat indicated by the arrow y, this movement continuing until theopposite end of the boltcomes into contact with the pattern-cam 26,whereupon such rearward movement of the bolt will be arrested and theforward movement of the slide 4 will be transmitted to the bar 16, thisbar alone being moved until its opposite end comes into contact with apost or stud 52 upon the bar 13, whereupon both bars will be movedtogether. As a result of this the knives 11 will be first moved from theposition shown by full lines to that shown by dotted lines in Fig. 6 andthen will be moved forwardly across the fabricthat is to say, the pointsof the knives will first be thrust downward through the pile-loops andinto'the grooved pile-wire,which is in line with the knives, said knivesbeing then moved forwardly, so as to cut the pile-loops in advance ofthe same. The cutter-bar 13 is pulled across the woven web instead ofbeing pushed. Hence there is less tendency to deflection of the bar dueto vibration which might result from a thrust on the bar, the adjustmentof the post or stud 52 governing the extent of movement of the bar 16independently of the bar 13, and hence governing the swing of the knives11, whereby they can be adapted to codperate with deep ,or shallowpile-wires and can have any desired depth of cut. The cutting operationceases when the pile-wirecontrolling slide 4 reaches the limit of itsinward movement. Hence the length of cut made by each knife depends uponthe position of the slide 4 in respect to'the inner end of its strokewhen the knife is moved into cutting position, and this in turn dependsupon the amount of lost motion between the outer end of the bolt 21 andthe face of the patterncam 26 when the inner end of said bolt is incontact with the end of the arm 16 and the end ofthe latter is incontact with the post or stud 52 on the arm 13. Thus if the bars 13 and16 always occupy the same position of rest or limit of mot-ion towardthe right and the face of the pattern-cam is always in the same planethe cut portions of the pile-loops would form longitudinal stripes of awidth depending upon the amount of lost motion between the outer end ofthe bolt 21 and the face of the cam, and if the latter had its facenormal position by a suitable spring. The l in different planes thestripes would have corlCO IIO

responding outlines. If the amount of travel imparted to the cutter-bar13 equaled or exceeded the distance between successive ism substantiallysimilar to that above dewith the ratchet-wheel25.

the left-hand end of the knife-carrying bar scribed for governing theposition of rest of the bars 13 and 16. Said mechanism comprises aratchet-wheel 40, hung to a stud carried by'a bracket 41 beneath thebreast-beam and provided with a pattern-cam 42, this ratchet-wheel beingoperated by a pawl 43, pivoted to aniarm on a rook-shaft 44, which hasan arm 45, adapted to be struckby an adjustable tappet 46, carried by anarm 47, depending from the pile-wire-operating slide 4, as shown in Fig.2 and in Fig. 3, the pawl 43 being acted upon by a spring 50, so as tocause it to engage with recesses in the back of the ratchet-wheel40,.and a detent 49 on the rock-shaft 44, acting on the teeth of theratchet-wheel to prevent overrunning of the same.

A spring 51 bears upon the top of the ratchet-wheel and prevents anyaccidental movement of the same during the time that the pawl and detentare being retracted.

A similar spring may be used in connection The post 52 at 13 has adepending portion, to which is con nectcd one end of a rod 53, the otherend of which is suitably guided between pins 54, carried by adependingportionof the bracket 41, whereby it is adapted to cooperate with thepattern-cam 42 to govern or determine the extent of movement toward theright, which the bars 13 and 16 are permitted to have under the pull ofthe spring 19. posing that the pattern-cams 26 and 42 are soadjus'tedthat the high portion of the cam 26 will act upon the bolt 21 at thesame time that the high portion of the cam .42 is acting upon the rod'53, there will always be the same amount of lost motion between theouter end of the bolt 21 andthe cam 26, supposingthat the differencebetween the high and low portions of each cam is thesame;

but when the high portions of the cams are in action the l nifeca1'ryi11g bar 13 will bear a different relation tothefabric from thatborne by it when the lower portions of the cams are in operatioin Thusin Fig. 11 the right-hand knife of the series on the movement of theknife-carrying barto the left will cut the loops at and near theright-hand edge of the fabric, while the left-hand knife of the serieswill be beyond the left-hand edge of the fabric and will therefore do nocutting. When, however, the lower portions of the cams 26 and 42 comeinto. position, the knife-carrying bar will be shifted so that theright-hand knife of the series will be beyond the right-hand edge of thefabric and the lefthand knife of the series will cut the loops at.

and near the left-hand end of the fabric, as shown in Fig. 12, and theintervening knives will be likewise shifted, so that supposing thefabric to be divided into a series of longitudinal strips the loops ofthose strips which were before cut will now be uncut and the loops ofthose strips which were before uncut will now be cut. loops is cut inthe center, it follows that the resulting pile will be of uniformheight. Hence there is little or no loss due to shearing, whereas in thecase of pile cut by knives As each of the pileon the pile-Wires, asusual, this percentage of loss is quite heavy. Moreover, I find inpractice that the knives which I employ have to be sharpened much lessfrequently than the ordinary pile-wire knives.

In order that the end of the stop-rod 53 maybe adjusted laterally inrespect to the pattern-cam 42, the guide-rods 54 for said stop-rod 53have collars acted upon by coiled springs 55 and tend to thrust saidguide-rod against the adj listing-screw 56, carried by the bracket 41,as shown in Fig.5.

Inorder that the cutting-knives may be held in proper alinement with thegrooved pile-wire, in connection with which they are intended to act, Iemploy the foremost pilewire of the series woven into the fabric as aguide for determining the position of the knife-carrying bar 13, thisresult being effected in the following manner: The bars 13 and 16 areguided at each end in a slide 57, which is free to move laterally in thegnide 14 and is acted upon by a spring59, tending to push it inwardly,so as to move the knife carrying bar backwardly over the series ofinserted pile-wires.

and this bar carries aseries of slotted fingers 63, each of the endfingers of the series having a depending forward portion notched, asshown in Fig. 7, for engagementwith the foremost pile-wire of the seriesof wires which have been woven into the fabric. these notched ends ofthe fingers are by the action of the springs 59 pressed firmly intocontact with said pile-wire they govern the position of theknife-carrying bar in respect to the series of inserted pile-wi res,whereby the knives maybe caused to cooperate with any desired one ofsaid pile-wires, depending upon the adjustment of the fingers 63longitudinally in respect to the bar 61. Thusin the present instance theknives operate in connection with the third wire of the set, as shown inFig. 7. The intermediate fingers 63. do not come into contact with theside of the pile- Each of the slides 57 is, however, connected by a bentwire 60 to a slotted bar 61, guided horizontally at each. end in aslotted block 62 on the fixed frame,

wire, but simply overlap the same, soas to prevent it from rising. Ihevertical guides 14 have hinged top'bars 70, normally held in position bypins or bolts 71, so that the bars 13 and 16 can be readily insertedinto and removed from their guides by simply releasing and throwing backthese hinged bars. The lower end of the depending portion of the stud 52is'swiveled, as shown in Fig. 13, so that as soon as the foremostpile-Wire has been withdrawn sufficiently to clear the left- .handfinger 63 the left-hand end of the knifebar 13 can be moved forwardlyunder the action of its spring 59and the right-hand finger 63 will berelieved from pressure due to this spring, thereby reducing wear uponboth the finger and pile-wire, which would result if both springs 59acted constantly upon said finger.

Projecting from both the front and rear sides of each of the slides 59,in which the bars 13 and 16 are guided, are plates 64, which carry a pinor bolt passing through a slot 65 in the bar 13, and between each ofthese plates and the adjoining side of the bar is interposed a coiledspring 66, (see Fig. 5,) these springs exercising a certain frictionalretarding effect upon the bar, so that when the spring 19 begins to movethe bar 16 to the right the movement of the bar 13 will be retardeduntil the knives have been raised to inoperative position and theshoulders of the two bars formed by the vertically-oifset portionsof thesame have come into contact with each other, as shown in Fig. 2, whereupon both bars will be moved together.

Projecting inwardly from the breast-beam 2 is a table or plate 72, whichextends under that portion of the web into which the pilewires are beinginserted and serves to support said pile-wires and prevent deflection ofthe same and of the woven web under the action of the cutting-knives,thereby insuring the proper cutting of all of the loops of pilethreadwhich lie in the path of either of the knives.

In removing defective picks from a pile fabric it is necessary to holdthe heads of the pile-wires back out of the path of the catch on theslide 4, so as to prevent the withdrawal of these wires as the loom isrun back. As the guide-frame 14: prevents access to the pilewire headsin the usual way, I mount in the guides on the breast-beam a push-rod73, which bears upon the heads of the wires and provides a ready meansof moving them rearwardly.

Although I prefer to operate the patterncam ratchets by thepile-wire-controlling slide, such operation is not essential to theproper carrying out of my invention, as such pattern cam mechanism maybe operated from any other available moving portion of the loom, ifdesired, and but one set of cam mechanism need be employed if a stripedpattern instead of a block pattern is desired,

either set of cam mechanism being available for use inthis case.

In cutting stripes or cutting all of the loops where variations in thetravel of the knife-bar are not required stops fixed when in action butadjustable for exactitude may take the place of the movablepattern-cams, and where it is desired to employ a single knife travelingcompletely across the fabric instead of a plurality of knives withcorrespondingly less ex tent of travel said knife may be mounted on aslide guided on a transverse bar or rail instead of upon a bar guided onthe frame, as shown in the drawings.

Modifications of mechanical detail within the scope of my inventionwillsuggest themselves to those skilled in the art. Hence I do not wishto be understood as limiting myself to the particular mechanical deviceswhich I have shown for accomplishing the movements of different parts solong as the essential features' of my invention as set forth in thebroader of the subjoined claims are attained, and although I have shownand described my invention as employed in connection with a particularform of loom for weaving pile fabrics it is equally applicable to otherforms of such looms.

Having thus described my invention, I claim and desire to secure byLetters Patcut- 1. In pile-cutting mechanism for looms, the combinationof a knife-carrier mounted above the fabric, and a knife pivoted to saidcarrier and movable on its pivot so as to engage with or be disengagedfrom the pile-loops, substantially as specified.

2. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric and movable across the same, anda knife pivoted to'said carrier and movable on its pivot so as to engagewith or be disengaged from the pile-loops, substantially as specified.

3. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above andmovable" across the fabric, with aplurality of knives mounted upon said carrier, and each adapted to cut aportion of a row of pile-loops, whereby the movement of theknife-carrier is less than the width of the fabric, substantially asspecified.

' 4:. In pile-cutting mechanism forlooms, the combination of a groovedpile-wire, a knifecarrier mounted above and movable across the fabric,and a plurality of knives mounted upon said carrier and having cuttingportions movable into and out of the groove of the pile-wire,substantially as specified.

5. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above and movable across the fabric, with aplurality of knives mounted on said carrier, and movable into and out ofengagement with the pile-loops, substantially as specified.

6. In pile-cutting mechanism for looms, the

IIS

ree er? combination of a grooved pilewire, a knifecarrier mounted abovethe fabric and a cutting-knife pivoted to said carrier so that itscutting portion may beswung into and out of the groove of the pile-wire,substantially as specified.

7. In pile-cutting mechanism forlooms, the combination of a groovedpile-wire, a knifecarrier mounted above the fabric and movable acrossthe same, and a cutting-knife pivotedto said carrier so that its cuttingportion can be swung into orout of the groove of the pile-wire,substantially as specified.

S. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric, acntting-knife mounted upon saidcarrier so as to be movedinto and out of cut-. ting relationwith thepile-loops, and a bar movable in respect to the knife-carrier foroperating said knife, substantially as specified.

9. In pile-cutting mechanism for looms, the combination ofa knifecarriermounted above the fabric and movable across the same, a knifemounted onsaid carrier and movable into and out of cutting relation with thepileloops, and a bar movable in respect to the knife-carrierand servingto move the cuttingknife into and out of cutting position, substantiallyas specified.

10. In pile-cutting mechanism for looms, the combination of aknife-carriermounted aboveand movable across the fabric, one or morecutting-knives mounted upon said carrier, and mechanism whereby themovement of the carrier in both directionsis effected by a pullingaction, substantially as specified.

f 11. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric and movable across the same,aknife mounted on said carrier and movable into and out of'cuttingrelation with the pileloops, and pattern mechanism for governing themovement of theknife-carrier across the fabric, substantially asspecified.

12. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above and movable across the fabric and having aknife movable into and out of cutting relation with the pile-loops, abar movable in relation to the knife-carrier and serving to move. thecutting-knife into and out of cutting position, and pattern mechanismgov erning the movement of said knife-carrier and controlling-bar,substantially as specified.

13. In pile-cutting mechanism for looms,

the combination of a knife-carrier mounted above and movablefacross thefabric, a knife mounted on said carrier so as to be movable into and outof cutting relation with the pileloops, and two sets of patternmechanism one governing the movement of tlleknife, in one direction andthe other governing its movement in the opposite direction,substantially as'specified, i

14. In pile-cutting mechani'smfor looms, the combinationof aknife-carrier mounted ment of the knife-carrier in the oppositedirection, substantially as specified.

15. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric and having a knife movable intoand out of cutting relation with the pileloops, a bar for moving saidcutter into and out of cutting position, and pattern mechanism governingthe extent of movement of said knife-operating bar, substantially asspecified.

16. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric, a knife pivoted to the saidcarrier and movable into and out of cutting relation with thepile-loops, a bar engaging said knife and swinging it into and out ofcutting position, and pattern mechanism for governing the extent ofmovement of said knife-operating bar, substantially as specified.

17. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric and having a knife movable intoand out of cutting relation with the pileloops, and adjustable means forarresting the downward movement of the knife when it has reached theproper cutting position, substantially as specified.

18. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric and movable across the same, aknife mounted on said carrier and movable into and out of cuttingrelation with the pileloops, and adjustable means for arresting thedownward movement of the knife when it has reached its proper cuttingposition, substantially as specified.

19. In pile-cutting mechanism for looms, the combination of theknife-carrier mounted above and movable across the fabric, aknifemounted on said carrier so as to be movable into and out of cuttingrelation with the pileloops, a bar for actuating said knife, and anadjustable stop whereby the movement of the knife-operating bar afterithas moved the knife into cutting position,will be transmitted to the knife-carrier, substantially as specified.

20. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric, a knife mounted on said carrierand movable into and out of cutting relation with the pile-loops, meansfor moving the knife into and out of cutting position, and means foradjusting the knife-carrierinto different lateral relations in respectto the fabric, substantially as specified.

21. In pile-cuttin H the tcombination of the knife-carrier mounted aboveand movable across the fabric, and a knife mounted on said carrier, withmeans of the knife-carrier whereby the knives may act successively upondifferent lateral portions of the fabric, substantially as specified.

22. In pile-cutting mechanism for looms, the combination ofa'knife-carrier mounted above and movable across the fabric, a knifemounted on said carrier and movableinto and out of cutting relation withthe pile-loops, means for moving the knife into and out of cuttingposition, and provision for laterally shifting the limits of movement ofthe knifecarrier so as to cause the knives to act upon difierent lateralportions of the fabric, sub: stantially as specified.

23. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above the fabric, a series of knives thereonmovable into and out of cutting relation with the pile-loops, means formoving the knifecarrier rearwardly with yielding pressure,and a seriesof stop-fingers movable with the knife-carrier and adapted to contactwith the foremost of the insert-ed pile-wires at different points in itslength, substantially as specified.

24. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above and movable across the fabric, a knifethereon movable into and out of cutting relation with the pile-loops, abar movable in respect to the knife-carrier for moving said knife intoand out of cutting position, means for moving said knife-operating bar,and a frictional retarding device acting upon the knife-carrier andserving to prevent movement of the same with the knife-operating baruntil said friction has been overcome, substantially as specified.

25. In pile-cutting mechanism for looms, the combination of aknife-carrier mounted above and movable across the fabric, a knifecarried by said bar and movable into and out of cutting relation withthe pile-loops, a second bar movable in respect to the first for movingsaid knife into and out of cutting position, means for moving saidsecond bar, a frictional retarding device for preventing movement of theknife-carrying bar with the knife-operating bar and engaging portions ofthe two bars for causing their joint movement, substantially asspecified.

26. The combination in pile-cutting mechanism for looms, of aknife-carrier and an operating-slide therefor having a cam and aspring-actuated bolt interposed between said cam and the end of theknife, substantially as specified.

27. The combination in pile-cutting mechanism for looms, of aknife-carrier, a bar movable in respect thereto for adjusting the knivesto operative or inoperative position, a slide carrying a pattern-cam anda springactuated bolt interposed between said cam mechanism for looms,

elements a reciprocating slide, and pile-cutting devices mounted abovethe fabric and having as elements a laterally-movable knifecarrying barand a laterally-movable knifeoperating bar, said bars receiving theirmovement from the reciprocating slide of the pilewire mechanism,substantially as specified.

30. The combination in a loom for weaving pile fabrics, of pile-wireinserting and withdrawing mechanism having as one of its elements areciprocating slide, a knife-carrier mounted above the fabric, and apattern-cam mounted on said pile-wire slide and serving to operate theknife-carrier, substantially as specified.

31. The combination in a loom for weaving pile fabrics, of the pile-wiremechanism having as one of its elements a reciprocating slide, aknife-carrier mounted above the fabric and having knives movable intoand out of cutting position, a knife-operatin g bar movable in respectto the knife-carrier, and a pattern-cam mounted on the pile-wire slideand serving to operate the knife-carrier and knifeactuating bar,substantially as specified.

32. The combination in a loom for weaving pile fabrics, of aknife-carrier mounted above the fabric, pile-wire mechanism having asone of its elements a reciprocating slide, apatterncam mounted on saidslide and serving to operate the knife-carrier and mechanism operated bythe movement of the slide for imparting movement to said cam,substantially as specified.

33. The combination in a loom for Weaving pile fabrics, of aknife-carrier mounted above the fabric, pile-wire mechanism having asone of its elements a reciprocating slide, patterncams for determiningthe movement of the knife-carrier in each direction, and mechanismoperated by the movement of the reciprocating slide and serving toimpart movement to said pattern-cams, substantially as specified.

34. The combination in pile-cutting mechanism for looms, of aknife-carrier mounted above the fabric, a pattern-cam for determiningthe movement of said knife-carrier in one direction, and yieldingtension devices for moving the knife-carrying bar in the oppositedirection, substantially as specified.

35. The combination in pile-cutting mechanism for looms, of aknife-carrier mounted above the fabric, a pattern-cam for determiningthe movement of said knife-carrier in one direction, and yieldingtension devices for moving the knife-carrying bar in the opposite IIO ;with the foremost :at. different; points dl awingmechanism having a s ldn ofilts ele- I ments a fecipl ocating slide with catch fdren: gagingthelleads 9f the"pile wil'es,"pil s-cum j ting mechanism operated-bysaid-slide, and "a push-rod whereby Lhheads of the pile-wires 2;

may be thrust rearwardly lin; oflj'ange 0f "In testimony wheyeofl havesigned my name tob hi specification in the presence o f z5 tgwosubscribingwitnesses. 1

1 LF E f BEOHTOLDQ FQ- CCQLLUMQ -1

